Employee Benefits - Summary of SERPs and Defined Benefit Plans and Deferred Compensation Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2023
Employee Benefits
Balances in Deferred Compensation Plan	$ 41.2	$ 40.9
Value of assets for funding future payouts under the deferred compensation plan	41.2	40.9
Contributions to Multiemployer Plans	5.4	4.8	$ 5.3
Weighted average assumptions to determine benefit obligations
Deferred Compensation Plan expected employer contributions during 2023				$ 2.0
Supplemental Executive Retirement Plans
Employee Benefits
Settlement losses related to payment of benefits	2.3		6.7
Change in benefit obligation
Benefit obligation at beginning of year	36.4	37.5
Service cost	0.4	1.0	0.9
Interest cost	0.7	0.6	1.0
Actuarial loss (gain)	(5.6)	(1.8)
Benefits paid	(0.8)	(0.9)
Plan settlements	(12.3)
Benefit obligation at end of year	18.8	36.4	37.5
Funded status
Funded status of the plans	(18.8)	(36.4)
Items not yet recognized as component of net periodic pension expense
Unrecognized net actuarial losses	1.9	10.5
Accumulated other comprehensive loss	1.9	10.5
Amounts recognized in the statement of financial position
Current liabilities	(0.8)	(12.9)
Noncurrent liabilities	(18.0)	(23.5)
Accumulated other comprehensive loss	1.9	10.5
Net amount recognized	(16.9)	(25.9)
Accumulated benefit obligation	17.1	32.9
Components of net periodic benefit cost
Service cost	0.4	1.0	0.9
Interest cost	0.7	0.6	1.0
Settlement loss	2.3		6.7
Amortization of net loss	0.6	1.8	1.9
Net periodic benefit cost	$ 4.0	$ 3.4	$ 10.5
Weighted average assumptions to determine net cost
Discount rate (as a percent)	2.17%	1.64%	2.63%
Rate of compensation increase (as a percent)	6.00%	6.00%	6.00%
Weighted average assumptions to determine benefit obligations
Discount rate (as a percent)	4.51%	2.16%
Rate of compensation increase (as a percent)	6.00%	6.00%
Expected employer contributions during 2023	$ 0.8
Defined Benefit Plans
Change in benefit obligation
Benefit obligation at beginning of year	74.5	$ 76.3
Service cost	2.0	2.2	$ 2.1
Interest cost	2.0	1.8	2.6
Actuarial loss (gain)	(21.0)	(3.6)
Benefits paid	(2.5)	(2.2)
Benefit obligation at end of year	55.0	74.5	76.3
Change in plan assets
Fair value of plan assets at beginning of year	70.9	63.9
Actual return on plan assets	(11.7)	9.2
Benefits paid	(2.5)	(2.2)
Fair value of plan assets at end of year	56.7	70.9	63.9
Funded status
Funded status of the plans	1.7	(3.6)
Items not yet recognized as component of net periodic pension expense
Unrecognized net actuarial losses	0.5	5.6
Unamortized prior service cost	2.8	3.4
Accumulated other comprehensive loss	3.3	9.0
Amounts recognized in the statement of financial position
Noncurrent assets	1.7
Noncurrent liabilities		(3.6)
Accumulated other comprehensive loss	3.3	9.0
Net amount recognized	5.0	5.4
Information for defined benefit plans with an accumulated benefit obligation and projected benefit obligation in excess of plan assets
Accumulated benefit obligation		74.5
Fair value of plan assets		70.9
Components of net periodic benefit cost
Service cost	2.0	2.2	2.1
Interest cost	2.0	1.8	2.6
Expected return on plan assets	(4.2)	(3.9)	(4.4)
Settlement loss			12.7
Prior service (credit) cost	0.5	0.6	0.6
Amortization of net loss		0.8	1.1
Net periodic benefit cost	$ 0.3	$ 1.5	$ 14.7
Weighted average assumptions to determine net cost
Discount rate (as a percent)	2.70%	2.40%	2.85%
Expected long-term rate of return on plan assets (as a percent)	6.00%	6.25%	6.25%
Weighted average assumptions to determine benefit obligations
Discount rate (as a percent)	5.00%	2.70%
Expected long-term rate of return on plan assets (as a percent)	6.00%	6.25%
Expected employer contributions during 2023	$ 0.0
Warehouse, delivery, selling, general and administrative expense | Supplemental Executive Retirement Plans
Components of net periodic benefit cost
Net periodic benefit cost	0.4	$ 1.0	$ 0.9
Warehouse, delivery, selling, general and administrative expense | Defined Benefit Plans
Components of net periodic benefit cost
Net periodic benefit cost	2.0	2.2	2.1
Other (income) expense, net | Supplemental Executive Retirement Plans
Components of net periodic benefit cost
Net periodic benefit cost	3.6	2.4	9.6
Other (income) expense, net | Defined Benefit Plans
Components of net periodic benefit cost
Net periodic benefit cost	$ (1.7)	$ (0.7)	$ 12.6